Global Patent Index - EP 1014363 A3

EP 1014363 A3 2001-03-14 - Reproducing apparatus

Title (en)

Reproducing apparatus

Title (de)

Wiedergabegerät

Title (fr)

Appareil de reproduction

Publication

EP 1014363 A3 (EN)

Application

EP 99125733 A

Priority

  • JP 36674698 A
  • JP 21871599 A
  • JP 29163499 A
  • JP 17597299 A
  • JP 17597399 A

Abstract (en)

[origin: EP1014363A2] A reproducing apparatus includes a first device for reproducing a signal of a run-length-limited code from a recording medium. A transversal filter subjects the signal reproduced by the first device to a partial-response waveform equalization depending on tap coefficients. A second device defects whether or not the signal reproduced by the first device corresponds to a zero-cross point, and generates 0-point information in response to a result thereof. A delay circuit responsive to the 0-point information for outputs at least three successive samples of the 0-point information. A temporary decision device calculates a temporary decision value of the equalization-resultant signal on the basis of a PR mode signal, an RLL mode signal, the successive samples of the 0-point information which are outputted from the delay circuit, and an actual value of the equalization-resultant signal. A third device calculates a difference between the temporary decision value of the equalization-resultant signal and the actual value thereof, and generates an error signal in response to the calculated difference. A fourth device controls the tap coefficients of the transversal filter in response to the error signal generated by the third device. <IMAGE>

IPC 1-7 (main, further and additional classification)

G11B 20/10; G11B 20/14

IPC 8 full level (invention and additional information)

G11B 20/10 (2006.01); G11B 20/14 (2006.01); H03M 5/14 (2006.01)

CPC (invention and additional information)

G11B 20/10009 (2013.01); G11B 20/10083 (2013.01); G11B 20/10111 (2013.01); G11B 20/10148 (2013.01); G11B 20/1403 (2013.01); G11B 20/1426 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1014363 A2 20000628; EP 1014363 A3 20010314; EP 1014363 B1 20060222; DE 69929927 D1 20060427; DE 69929927 T2 20060928; EP 1605463 A2 20051214; EP 1605463 A3 20071010; US 6445662 B1 20020903

INPADOC legal status


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- Effective date: 20061123

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